epinephrine

/ɛpɪˈnɛfɹɪn/

Meanings

noun

A catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine.

Examples :

"During a severe allergic reaction, doctors often use epinephrine to quickly raise blood pressure and open airways. "

Related Words

synthesized verb

/ˈsɪnθəˌsaɪzd/ /ˈsɪnθɪˌsaɪzd/

To combine two or more things to produce a new product.

"The chemist synthesized a new drug by combining several different compounds. "

secreted verb

/ˈsiːkɹətɪd/ /sɪˈkɹiːtɪd/

To make or keep secret.

"The shy student secreted the note under his desk, hoping no one would see it. "

response noun

/ɹɪˈspɒns/

An answer or reply, or something in the nature of an answer or reply.

"My teacher asked for a response to the question, so I wrote an answer on the board. "

allergic noun

[ə.ˈlɜː.dʒɪk] [ə.ˈlɝ.dʒɪk]

A person with a tendency to having allergies; a person with multiple or severe allergies.

"My younger brother is an allergic; he has severe allergies to peanuts and pollen. "

catecholamine noun

/katəˈkɒləmiːn/

Any of a class of aromatic amines derived from pyrocatechol that are hormones produced by the adrenal gland.

"During a stressful exam, the student's adrenal gland released catecholamine, causing her heart to race and her palms to sweat. "

stimulates verb

/ˈstɪmjuleɪts/

To encourage into action.

"The smell of coffee stimulates me to wake up in the morning. "

norepinephrine noun

/ˌnɔrɛpɪˈnɛfrɪn/ /ˌnɔrɛpɪˈnɛfˌrin/

A neurotransmitter found in the locus coeruleus which is synthesized from dopamine.

"When faced with a stressful exam, her body released norepinephrine, helping her focus and stay alert. "

autonomic adjective

/ˌɔː.tə.ˈnɒm.ɪk/ /ˌɑː.də.ˈnɑː.mɪk/

Acting or occurring involuntarily, without conscious control.

"My breathing is an autonomic process; I don't have to think about it to keep breathing. "

neurotransmitter noun

/ˈnʊroʊtrænzˌmɪtər/ /ˈnjʊroʊtrænzˌmɪtər/

Any substance, such as acetylcholine or dopamine, responsible for sending nerve signals across a synapse between two neurons.

"When Maria felt happy after receiving good news, the neurotransmitter dopamine was released in her brain. "

reaction noun

/ɹiˈækʃən/

An action or statement in response to a stimulus or other event.

"The announcement of the verdict brought a violent reaction."

pressure noun

[ˈpɹɛʃ.ə(ɹ)] [ˈpɹɛʃ.ɚ]

A pressing; a force applied to a surface.

"Apply pressure to the wound to stop the bleeding."

hormone noun

/ˈhɔːməʊn/ /ˈhɔːɹmoʊn/

Any substance produced by one tissue and conveyed by the bloodstream to another to effect physiological activity.

"The hormone adrenaline was released into her bloodstream, causing her heart to race as she prepared for the big presentation. "